A foal.
Female horses are called mares, female foals are called fillies.
A Mares' offspring is called a "Foal".
"Knowing he could afford to keep only one of the three horses, he decided to sell the two mares, and keep the young stallion".
You're right all mares can have foals. But not every owner whats their mare to have foals. Mares that have owners that what them to have foals are called broodmares. Mares that are not going to be used for breeding purposes are just called mares.
There have been cases of mares having twins, but generally horses only have 1 foal.
Mares protect, nurture, feed and socialize their foals.
A young female, not yet mature (under 4 years old) is called a filly. A female older than 4 is called a mare.
Mares protect, nurture, feed and socialize their foals.
A band.
A pigeon's young one is called a chick.
Young one of a Monkey is called an Infant Young one of a Peafowl is Peachick Young one of a Turtle or Crocodile are called Hatchling
lactation